Author： Nagayasu Sei Uhlmann Gunther Wang Jenn-Nan
Publisher： IOP Publishing
ISSN： 0266-5611
Source： Inverse Problems, Vol.29, Iss.2, 2013-02, pp. : 25012-25022
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Abstract
In this work, we study the inverse boundary value problem of determining the refractive index in the acoustic equation. It is known that this inverse problem is ill-posed. Nonetheless, we show that the ill-posedness decreases when we increase the frequency and the stability estimate changes from logarithmic type for low frequencies to a Lipschitz estimate for large frequencies.
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